The 10 year maturity date is where the HELOC will modify into a different product all together. 

Jared,Take a look at these articles and I think you will be able to make a decision.http://www.themoneycommando.com/umbrella-policy-vs-llc-asset-protection-part-1/http://www.themoneycommando.com/umbrella-policy-vs-llc-asset-protection-part-2/ They dive into very detailed explanation as well as many risks/benefits & possible scenarios in which makes better financial sense.

These could be specific products with national credit tenants that are crafted with the safe harbor of rev proc 2002-22 in mind. 

At your age/income level, you should be 100% focused on learning about investing and aggressively investing your money into liquid assets. 

I am trying to do my first BRRRR deal but because property values are so high I am not able to get the asset for the right price.

Nationwide:  Angel Oak and Lima One,,, many other asset based 30 yr lenders.One of the issues scaling up has is deal flow. 

I'm not entirely sure the product continues to be developed given their asset tracking still says "coming in 2017" but the site continues to operate so I'm going to reach out to the company to see where things are at and whether there's legitimate concern over the product shutting down. 

Is the SBA 504 the right product for what I’m describing?

At this stage of your life/career, your best bet is to maximize your savings into liquid assets (ETFs should be you go to option - Vanguard, Fidelity or Blackrock).

At the beginning, we were only plan to do quick rehab on a 2/1 but the finish product is a 3/2.